Question

Express as a simplified polynomial:

(4a + 5)2

Answer 1

you mean like...8a-40? 8(a-5)?

Answer 2

(4a + 5)(4a + 5)
16a^2 + 40a + 25

Answer 3

is the 2 a square?

Answer 4

it is

(4a)^2 + 2(4a)(5) + (5)^2
16a^2 + 40a + 25

Answer 5

It's a special product of the form (a+b)^2 = a^2 +2ab +b^2

Answer 6

I have to log off now and do some studying. I'll be back in a couple of hours.